Atomizing nozzle



Oct. 5 1926. 1,601,724

F. R. ELLIS ATOMIZING NOZZLE Filed July 19. 1922 Inventor:

Patented Oct. 5, 1926.

UNITED STATES PATENT OFF-'l-CE. I

FREDERIC R. ELLIS, OrBo'sToN, MASSACHUSETTS, ASSIGNOR To B. F. STURTEVANT COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS.

ATOMIZI'Ne NOZZLE.

Application filed. July 19,

The present invention relates to atomizing nozzles and more particularly to a nozzle specially designed and adapted for use in air conditioning apparatus, such, for example, as an air washer, wherein air is washed or cleansed by subjecting it to the action of a very fine spray or mist of water.

Air washers and similar air conditioning apparatus require large quantities of water in order to effectively cleanse or cool the air, and for reasons of economy it is the common practice to use the same water over and over again, making up any small amount that may be lost by leakage or evaporation. The repeated spraying of this water into the air results in an accumulation in the water of foreign matter'whic'h is washed out of the air, Such as particles of dust, lint, etc. After such an apparatus has been in operation a short time, the water becomes Very dirty and the atomizing nozzles are liable to be clogged and their operation either stopped entirely'or seriously interfered with.

The object of the present invention is to provide an atomizing nozzle which shall be simple in construction, etficient in operation, and not liable to become clogged by foreign matter in the water.

To the above ends the present invention consists in the nozzle constructed as hereinafter described and more particularly described in the claims.

In the accompanying drawings which illustrate what is now considered the preferred embodiment of the present invention, Fig. 1 is a vertical sectional view of the nozzle complete; Fig. 2 is aside elevation and Fig. 3 is an end elevation of the spirally grooved cone.

As shown 'in Fig. 1, the improved atomizing nozzlecomprises three separable parts, a body 5, a cone 6, and a cap 7, which holds I the cone in position within the body.

The body which is of general conical shape is provided with a stem having a. central water passage 8 and eXteriorly threaded at 9 for attachment to the water supply pipe. The interior of the body is in the form of a smooth sided conical chamber or recess communicating at its small end with the water passage 8 through. the enlarged intermediate cylindrical chamber 10. A flange 11 at the large end of the body is externally screwthreaded to receive the dome-shaped cap 7,

1922. Serial No. 575,977.

provided with the central discharge orilice 12.

Positioned within the body 5 and held from movement by the cap 7 is the cone '6, the surface "of which is formed with spiral grooves 13. These grooves are of relatively large cross-sectional area, and are separated from one another by narrow spiral faces 1a which Contact with the inner conical wall of the body, thereby forming spiral water passages of substantially triangular cross-section, two of the walls being formed in the cone and the third by the inner face of the body. These water passages terminate at the large end of the cone in semi-crescent shaped openings through which water is discharged substantially tangentially against the inside of the dome-shaped cap 7 near its outer edge, and is thence directed inwardly in a spiral path until it reaches the orifice 12 through which it is thrown at high velocity in all directions substantially tangentially to the surface of the cap. As a result the water is instantly broken up into a very fine spray or mist and in this form comes into intimate association with the air, eli'ectivel'y washing 0r cleansing the same.

By making spiral water passages 13 of relatively large cross-sectional area and the contacting faces or partitions 14 of relatively narrow width, not only will the volume of water sprayed by the nozzle be increased, but, owing to the'relatively large inlet openlII gS at the beginning of the spirals, the liability of clogging is greatly diminished. The enlarged chamber 10 between the spirals and water passage 8 is also of advantage in preventing clogging which is most liable to occur at this point. r

During the normal operation the cone 6 with its spiral water passages is held fixed in the body 5, by the internal shoulder or flange which overlaps slightly the cone between the semi-crescent discharge'openings, but if for any reason the nozzle should become clogged, it is only necessary to slightly loosen the cap 7 which will free the cone within the body and the clogging material will be immediately carried away by the flow of the water, when the cap can be tightened and the normal operation of the nozzle will be resumed.

WVhile the present invention has been illustrated and described in what is now considcred to be its preferred form, it is tobe understood that it is not limited to the precise form and dimensions shown but these may be varied without departing from the spirit of the invention.

hat is claimed is:

1. An atomizing nozzle comprising a body having a substantially conical chamber open at its larger end and provided with a water passage for admitting water to the smaller end of the chamber, a cone within the chamber having upon its conical surface spire-conical water passages of large cross-sectional area separated from one another by narrow partitions, and a cap for closing the open end of the conical chamber having a discharge orifice for the water and having means engaging the larger end of the cone at separate points to hold the cone in fixed position in the chamber, substantially as described.

2. An atomizing nozzle having, in combination, a body having a substantially conical chamber, a water passage for admitting water axially to the smaller end of the chamber, and an enlarged intermediate chamber between the water passage and the conical chamber, a cone within the chamber provided with a spiral water passage 011 its surface, and a cap having a domeshaoed interior provided with a central discharge orifice and with an internal annular shoulder to engage the cone at separated points to hold the cone in fixed position and to permit the discharge of water from the passages between such points.

3. An atomizing nozzle comprising a body having a conical chamber open at the larger end and a water passage communicating with the smaller end, a truncated cone in the chamber having spiral water passages on its conical surface separated by narrow partitions and provided with large inlet openings, and a cap for closing the open end of the conical chamber and for holding the cone in fixed position having a domeshaped interior and an axial discharged opening for the water.

An atomizing nozzle comprising a body provided at one end with a threaded extension for attachment to the source of water supply, and a water passage through said extension, and at the other end with an extcriorly threaded rim and with a conical chamber within the body communicating through an enlarged intermediate chamber with said water passage, a truncated cone within the chamber provided with spiral water-passages on its conical face, the spiral water passages being substantially triangular in cross-section, two sides formed in the cone and the third side by the wall of the conical chamber in the body, the water passages being separated by narrow faces contacting with said wall of the conical chamber to form partitions, and a domeshaped cap having a central discharge orilice, a shoulder to engage the cone to hold it in fixed position within the conical chamber, and an internally threaded flange for securing the cap to the body.

5. An atomizing nozzle having, in combination, a fixed cone provided upon its conical surface with a plurality of spiral water passages of substantially uniform cross-sectional area, a body within which the cone is received provided with an axial passage for admitting water to the smaller end of the cone, and a cap for closing the larger end of the body provided with a discharge orifice for the water and with means engaging the cone to hold the same in fixed position.

6. An atomizing nozzle having, in combination, a body having a substantially conical chamber, an axial water passage for admitting water to the smaller end of the chamber, a cone with the smaller end directed toward the axial water passage and provided on its surface with spiral water passages separated at the water inlet end by thin partition walls, and a cap provided with a dome-shaped interior and a central discharge orifice and engaging the ends of the partition walls to hold the cone in the chamber.

7. An atomizing nozzle having, in combination, a substantial conical chamber, and axial water passage for admitting water to the smaller end of the chamber, a cone within the chamber and provided on its surface with spiro-conical water passages of sub stantially triangular cross-section, the elements of one wall of the water passage being substantially parallel to the axis of the cone and the elements of the other wall of the passage being substantially perpendicular to the axis of the cone, the water passages being separated at the water inlet end by thin partitions, and a cap for the body having a central discharge orifice and engaging the end of the cone to hold the same in position.

FREDERIC R. ELLIS. 

